Engine



HI B'ENSKIN.

Max. 27, 1923.

ENGINE.

FILED DEC. 22,1921.l

4 SHEETS-SHEET 1.

Mar. 27, 1923,

H. BENSKIN.

ENGINE.

man DEc.-22,19 21.

4 sHETs--SHEET s.

P ,bww "1414-325 Paten'tesl ll/lar., 2'?, lifilo @Nliiiiglil .application filed Eecember 22, 1921;. Serial No. Me/le.

Emision, a

end e resident Jesper ind 5 State of iowa, have invented a, cerein new and useful Engine, ci which the is n specification.

The object ol following my inveniion is to provide an engine of the two-cycle type, having novel features of construction.

it is Well-known liat he tivo-cycle engine is not as satisfactory be on account of the be supplied during a short part es il; might otherwise feci that the i'uel musi o' the cylinder stroke and does not have time enough to come in 'the desired volume or quantity and also Jfor the reason that 'gine is fired while the much cr :npression as is desired.

fuel. is not ordinarily the enunder as lt is therefore an obi-ect of my invention 'to provide an engine of the tw whereby provision o-cycle type,

is made i'or su) l inot an aniple amount of fuel mixture and for putting the fuel undercoinpression et the commencement of the iiring stroke of the engine.

Still a u e l `lurther oluect is to provide a novel rang'enient and combination oi the various parts of iny device, Wherehj,r the objects contemplated are attained, as hereina'lter more ullv set forth, pointed out in my claims,

undv illustrated in the accompanying drawings, in which:

Figure l shows a transverse,

vertical sectional view through an engine embodying;

in v invention.

` Figure 2 shows a view taken on the line through such an engine cylinders,

Figure 3 shows e longitudinal, sectional Q oi Figure l,`

having four vertical, sec'ioual view' taken on the line 3-3 of Figure 2 through the roiarj)7 fuel control valve, str

uci-ure, ill ustrating the arrangement of the spari( plug and the Ineens tor scavenging any gases thatsdrgght 'be in the spaces adjacent thereto.

Figure taken on the line #lrei of Figur ing the details of jshe means r the compression piston; und

Sp ark ilu' or the f b3 4 shows a veriical, secional view e einhody or operating 6, T, 8, 9 and l0 ere diagramff inerc views illustrating in e wey' Gpposie `Lhe cylinders ll is a pluraliiy of cylinoers lZl inclined. also at ein angle of about 30 from die perpendicular and 80 from the cylinders li.

Beier? 'che casting or engine block l0 is a. lower cranlr cese member or the like 13. The lower peri; of A:bhe block l() orrns the upper part of the crenlr cese member and the hloclr l0 and crunk case member 13 are provided 'with opposi'e iianges l-i end l5, n

which may be locked together by bolts 1S and nuts i7.

The 'row oi cy'inrlers 11 is provided with an engine heed 3 8 end che row or cylinders l2 is provided Wih. e. cover or head 19. The line oi' division, between the engine heed 18 endihe engine is ai, lie upper end ol `the cylinders 1l. The line of' juncture 'between `the cylinders l2 and'he heed or cover there fore is abou?. midway of the cylinders.

le will thus he nGiced that the head l@ forms 'e part of ille row of cylinders lf2.

Suitehly mounted is a crank shan. haring die 'four cranks as shown. Cenneciing rods 21 ere. pivote-d on ehe cre-nies enel are con nected with he respective cylinders 25E 'in Cil Si on ehe crank simfi. of each section are connected oy iiiiee gi-bufiinaiiy extending partition of mi ie', iiiusreted 'fos instance in fiorire snai provided :it their oui-iev edges ith mi 'ved iaeges o1' extensions 33 ari-ener` iie. interior of the coinimrtixient 2 :imi extending in opposite directions'for she respective patitions and designed to serve :is vsive members.

Suitabiy mounted in a, screw-threaded opening 34 in the head 18 adjacent *iov and. above each cyiinder and siightiy at one side therefrom e spark ping 35. Each coinpait-men, 2% is conneced will one of the cviinders 12 by means of e fuel passage 8G. Each cylinder 1Q has apassege m' opening 37 communicating with the passage 3G and each comperment 24 has an opening o1' passage 38 communiebing wish :i passage 55. Esch xfyiindei' il has im opening 3S) comimmicstiiig with en, exhaust iiiimifeid eli), Each cyiinder l2 has :m opening ci com-- mimiceting 'with :in intake mnnioici Ie each cylinder 12 is a tubular: sii/ling;I sieeve 43, having on one side an extensie fili sliding in a guide 45 si die uppei oei of the cyiinder l2. in each sieeve L is mounted L fuel compressor piston 46 cori .necteci in the usual Wfl-y by e coii'neciiig' soil l-T with one of the cranks of the crank shfi.

Un eac/h sleeve 43 is a dowzm'azdiy proyiecting lug 48 arenged to comet with e cem e9 on she crank shaft 20. @n die opposie side of each sleeve is e curved erm 46; extending no gosition on he opposie side 01' ehe crank shaft and adapted to cozact with e com 5() on seid shaft. (Fig. Je.)

The extension 44 of the sieeve -1-3 has im opening 5l which is adapted in one posiioii of zhe sliding movement of the sleeve 43 'zo register with the opening 37. The is of such ieiigth in its iower position o movemeni, that it deurs the opening 4i ami cioses sei-d openiig. v

in each partition 32 arranged to register with the opening 34e when the weary vai-ve is in certain positions of its move-merli; is e rediaiiy extended passage 52. (Fig. 3.)

The 'rotary valve rotates miti-ciecim'ise from iis position shown in Figure 3i, iie members 33 have grooves iii 'iieir ouf, surfaces egending from the oue? ends the passages 52 a short dist-ence along te members 33 in the direi-,sion of the asia/wc; of the vaive.

Wiii new explain somewiias in fieaii the opeietion of my engine.

ii members 32 eqiii-distzmiy s paced from etici? je i,

iiieveii c if. piston 4x3 iis when its crank iles peipendicuiei wiii.

The sleeve el?) iis-s e iis uppei" iimit nio-fem down, so that the Lippe? 'peri of die extei tion sie has closed the opening fi?. The eccuiswii.. use in iiiis Dosiion.

it /siiouici perhaps oe here mentioned Eil-.1t

` fr' 'en are for piuvposes of iiusnot be exactly accurate for i'eieiion io f gone beyoi, ,e and has ster iwi-ion and toet the Charge in the comi 3U ment 2%- bove the cylinder l and bese/'ees se pzuibitimis 352 next above the cjf'iiudei ignited ehe expiosmn will rive iie i may ie cnt Gow diy. he pisteiis 22 ."i iy' et their upper cnw-3,' et 5? 95 heini of the piston 2&2 to pioiuto zhe confipm'tmeii 2%- i* fr eompession.

A 'in showin in Figui'e 5 we ii 1 y i siimin in Figui@ imei the fisher: s more coiiesjioiciiigiy as iiustieei in iiie We n fes.

riviie si-eefve eed the piso'n ien on their downwsrfl stroke. @mi #05 YV111 of iie movemen, my eieeii i1=e iii iie opening ci recess fai ce e passages emi 52 'zo thai aeimient which communi eziileust maoioi s@ 'i Wi Ahoed el? injury sches egpi'ofif, Figure the u pen and during tie effi sioize, the exif-usi; as shown in igure 8. "2U pests eine in iie position Y if e pistes 6 es the beiten ,i sifiok'r. The sieeve begins to i" the opening il when the i'iiing memes imi ieeves seid opening; i525 when the stroke has iieeii v wpie'fie'i hewn in Fig Y i1 i" isinis in Figure 'i' 'eomiienceii ls iijowelrf; ssiose,

crank moves upwardly. from position shown in Figure 8, to its position shown Figure 9, the sleeve 43 closes the opening 41 and the opening 51 registers with the open ing'- 37.

The rotary valve moves to the position moves upwardly one-sixth of a revolution,

the piston 46 forces the fuel mixture out of the cylinder 12 through the opening 37 and passage 36 and into the compartment 24.

It will be noted that shortly after. the parts leave their position shown in Figure@ and move toward their position shown 1n Figure 10, the rotary valve will move to position for closing lthe exhaust so that the action of both pistons is such as to compress the charge in the passage 36 and the compartment 24.

lVhen the parts reach their position shown in Figure 10, vthe rotary valve closes the opening 38 and the piston 22 then-moves upward to its position shown in Figure 5 for imparting considerablygreater compression to the charge above the-piston head.

lt will be understood that the pistons are timed and fired in proper order to secure the most desirable results.

It will be noted that by the construction here provided., I have made it possible to use the incoming charge for a short time toassist in lscavenging the exhaust gases I have provided a relatively large passage through which gases may come into the explosion chamber, so that a relatively large charge may be supplied for the next explosion. This is important in a two-cycle engine, which is operative at every downward stroke of the piston. I have also provided the pistons 46, which greatly assist in compressing the fuel charge and have provided the closed portion of the chamber 24 above the cylinder 11, which becomes charged with fuel already under some compression and is closed while the rpiston 22 is one-third ot' its distance below its highest point, so that the final upward movement of the piston 22 imparts much greater compression to the charge.

The rotary valve is so arranged that it need only Ymake one revolution for every three revolutions of the crank shaft.

lt will be noted that I have provided a rotary valve forcontrolling the fuel intake and exhaust and also for forming part Iof a rotary compression chamber. This stiuc ture does away with the ordinary valves and springs employed in the larger number of internal combustion engines and affords a smoother working and simpler mechanism.

or thel compression piston cylinder, I

have used a sleeve valve structure, which is simple and e'ective lfor the purpose.

lt should be noted 'that my rotary `valve serves not only to control the ingress of fuel and theV outlet of 'exhaust gas, but that itl also has chambers or compartments which serve as parts ofy the explosion chamber at the time of ring, andv which ai'elarge enough to serve not only'as Jfuel and exhaust passages, but 'also as means for conveying a considerablel part of the fuel and gases. These compartments or chambers are in practice of aboutone third the capacity of the entire'iring chamber and thus a subi stantial part of one charge may passinto one such compartment While another charge is being fired. Also, -whcii'ia filled compartment of the valve is moved to where its open end registers with the cylinder the 'passa-ge between the compartment and cylinder' is so large that theY fuel passes more quickly into the cylinder thanwould be possible with the valve controlled openings usually employed. This structure greatly facilitates the supplying of fuel to the cylinders.

. lt will be understood that changes may be made in the details of the construction and' arrangement of the parts of my improved engine, without departing from the real spirit and purpose of my invention and it is my intention to cover by my claims, any" modified formsof structure of use of chanical equivalents, which may be reasonably included within their scope. 4

claim as my invention:

l. In an engine of theclass described, having an exhaust outlet, an explosion cylinder, a fuel compression cylinder, a rotar valve structure interposed between said cy inders having a plurality of chambers of sufficient capacity for 'carrying a substantial part of the charge or of the' exhaust gases, and means for operating said valve for bringingthe, chambersl successively into communication with the compression chamber for taking in a substantial charge, then into simultaneous communication with the compression and. explosion .chambers,v then sion chamber only, then into position iii communication with the explosion chamber and an exhaust outlet, then into vposition in communication with the exhaust outlet only.

2. In a two cycle engine, having an exstantial charge of vfuel or exhaust gases,

means for rotating said valve, said parts being so arranged that each compartment. successively communicates with the` compresto a position communicating withthe exploi sion o 'linder for bakinf in a. ohai'ffe hen c s; a

` communicates with the compression cyr/hnder and *die exposion cylinder, then communi-@fates with ie explosion cylinder -aloneithen comnnmicaes with "ehe exploexpiosion cylinder, a compression eyiinder,

a rofzary member inerposed between said ryliners having chambers of a capacity 'suf'erzient o carry a substantia part ,or he www/aa charge and exhaust grassa 'and also to form passages for affording communication between be explosion cylinder and the compression cylinder and he exhaust opening in different. posiions of the rotation of said member, said chamber in rotary member being adap'ed to 'form substantial parts of the explosion chamber at the time of firing, the exposion o viniior having a piston arranged 11o project inio the Chamber in the rotary member for increasing the compression of the ieuei just before iiring.

es Moines, iowa. December 16, 1921.

HARLEY BENSKIN. 

